refactor node structure

scripts/EventBus.gd

@@ -0,0 +1,95 @@
+class_name EventBus
+extends Node
+
+@onready var node_main = get_parent()
+@onready var node_mainmenu = find_child("MainMenu")
+@onready var node_game = find_child("Game")
+
+
+# The idea is for the user to be able to choose the map from GUI later
+var map_filenames:Array = [
+	"res://maps/tampere_10x10km_1000px.png",
+	"res://maps/tampere_10x10km_1024px.png",
+	"res://maps/varkaus_256x256px_test.png",
+	"res://maps/tampere_256px.png",
+	"res://maps/tampere_10x10km_4096px.png"
+	]
+var map_filename:String = map_filenames[3]
+var _world_generator:WorldGenerator
+
+
+func _ready():
+	node_mainmenu.set_ready()	
+
+	
+func _unhandled_input(event) -> void:
+	if event.is_action_pressed("open_main_menu"):
+		# move mainmenu to current game camera position
+		var mainmenu_pos = Globals.CAMERA_POSITION
+		mainmenu_pos.x -= DisplayServer.window_get_size(0).x/2 
+		mainmenu_pos.y -= DisplayServer.window_get_size(0).y/2
+		self.find_child("MainMenu").position = mainmenu_pos
+
+		# show the menu
+		toggle_main_menu_visibility()
+		#await get_tree().create_timer(0.2).timeout
+		self.find_child("Game").process_mode = PROCESS_MODE_DISABLED
+
+
+func _on_mainmenu_button_pressed(button:int):
+	match button:
+		Globals.MAINMENU_NEW_GAME:
+			start_new_game()
+			node_mainmenu.find_child("Menu_NewGame").disabled = true
+			node_mainmenu.find_child("Menu_ResumeGame").disabled = false
+			toggle_main_menu_visibility()
+			
+		Globals.MAINMENU_LOAD_GAME:
+			pass
+			
+		Globals.MAINMENU_RESUME_GAME:
+			# TODO save camera position before opening menu, restore camera position when closing menu
+			node_game.process_mode = PROCESS_MODE_INHERIT
+			toggle_main_menu_visibility()
+			
+		Globals.MAINMENU_OPTIONS:
+			pass
+			
+		Globals.MAINMENU_CREDITS:
+			pass
+			
+		Globals.MAINMENU_QUIT_GAME:
+			node_mainmenu.quit_game()
+			
+		_:
+			push_error("Error: Main: unknown signal at _on_mainmenu_button_pressed: ", button)
+
+
+func start_new_game():
+	# create a new world with worldgenerator
+	_world_generator = WorldGenerator.new()	
+	if !_world_generator.generate_world(map_filename):
+		push_error("World generation failed :-(")
+		node_main.quit_game()
+		
+	node_main.unpause_game()
+	node_game.set_ready()
+	self.set_camera_position(
+		Vector2(Globals.map_size / 2.0 * Globals.TILE_SIZE_X, 
+		Globals.map_size / 2.0 * Globals.TILE_SIZE_Y)
+		)
+	
+
+func toggle_main_menu_visibility():
+	node_game.toggle_visibility()
+		
+	if node_mainmenu.visible:
+		node_mainmenu.hide()
+	else:
+		node_mainmenu.show()	
+
+func set_camera_position(pos:Vector2):
+	node_game.set_camera_position(pos)
+	
+
+